Download SBCE: Hardware Maintenance Manual and Troubleshooting Guide

Connecting an Ethernet switch module to another switch or hub
Description: The ports on the Ethernet switch module are enabled for AutoNegotiation by default.
Normally, a straight cable is used to connect the ports to objects on the network. However, If you have
specifically set the speed/duplex value, you need to connect the ports as follows:
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•
Use a straight cable to connect the port to NICs on the network.
Use a crossover cable to connect the port to another switch or hub on the network.
In a crossover cable, two pairs of wires are switched at one connector end (in this case, the Transmit pair
and the Receive pair).
If you need a crossover cable, you can obtain a commercially-available one or you can make one.
Complete the following steps to create a customized crossover twisted-pair cable for 10BASE-T or
100BASE-TX connections:
1.
2.
Leave one end of the cable as is, with the RJ-45 connector intact.
At the other end of the cable, connect wires 1 and 2 to contacts 3 and 6, respectively. Then, connect
wires 3 and 6 to contacts 1 and 2, respectively. Refer to the following diagram.
Configuring the management module for remote access
Attention: If you forget your management module password, you must replace the management module.
After you connect the management module to the network, the Ethernet port connection is configured in one
of the following ways:
• If you have an accessible, active, and configured dynamic host configuration protocol (DHCP) server on
the network, the host name, IP address, gateway address, subnet mask, and DNS server IP address are set
automatically.
• If the DHCP server does not respond within two minutes after the port is connected, the management
module uses the static IP address and subnet address.
• Blade server startups initiated from the network will be faster if you connect the DHCP server to the
Ethernet switch in I/O bay 2. This is because the BIOS code in the blade server "sees" the bottom Ethernet
controller first, and the bottom Ethernet controller in each blade server is associated with the switch in I/O
bay 2.
Any of these actions enables the Ethernet connection on the active management module.
Make sure your computer is on the same subnet as the management module, and use your Web browser to
connect to the management module. In the brower URL or address field, specify the IP address the
management module is using:
• If the IP address was assigned through a DHCP server, get the IP address from your network
administrator.
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